Hardware reference guide

Modbus Plus NOMs
284
35013379 02 October 2007
LED Error Codes The blinking Run LED error codes for the NOM module shows the number of times
the Run LED on the NOM module blinks for each type of error and the crash codes
for each (all codes are in hex).
LED Error Codes
Number of Blinks Code Error
Steady 014H normal power down event
2 815 ram sequence error
3 49H illegal data command received by bypass code
4BH diagnostics test pattern invalid in the icb block
4CH diagnostics test pattern invalid in the page 0
4DH icb address not the same as found in hcb
4EH bad code selected for mstrout_sel proc
52H config table exec_id is different than the sys table exec_id
53H got a pupinit hook for neither S985 nor S975 addr
56H did not get bus ack form 984 interface within 400 ms
59H unexpected modbus port state in send command to 680
proc
5AH system table missing
5BH bad DPM critical byte write
4 616h bad or unexpected interrupt
617h loopback error on modbus port 1
618h parity error
619h set port greater than 21
61AH controller ram size is less than 8k
621H modbus cmd-buffer overflow
622H modbus cmd-length is zero
623H modbus abort command error
624H bad modbus state trn-int
625H bad modbus state rcv-int
626H bad comm state trn_asc
627H transmit underflow error
628H bad comm state trn_tru
629H bad comm state rcv_asc
62aH bad comm state rcv_rtu
62bH bad transmit comm state
62cH bad receive comm state
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com